X (x 10) {System
println("y=" + (3 * x - 11));}}}2
输入一个年份推断year是否是闰年package student
xiaoqiao
day01;import java
Scanner;public class Er {public static void main(String[] args) {System
println("请输入年份");Scanner sc=new Scanner(System
in);int year=sc
nextInt();if((year%4==0&year%100
=0)|(year%400==0))System
println("是闰年");else System
println("不是闰年");}}3
任意输入a,b,c 3个数推断a，b，c大小package student
xiaoqiao
day01;import java
Scanner;public class San {public static void main(String[] args) {System
println("请输入三个数（加空格或回车）:");Scanner sc = new Scanner(System
in);int x = sc
nextInt();int y = sc
nextInt();int z = sc
nextInt();if (x > y & x > z) {System
println(x);} else if (x < y & z < y) {System
println(y);} else if (x < z & y < z) {System
println(z);}}}4_1 输出图形
